If y is the dependent variable and is the independent variable. And if the sum of the cross product of the deviations is Σ(x - x)(y-7)= -53, and also if 3.49 and 2.55 are the standard deviations for the independent and dependent variables, respectively, and we have a sample size of 20, what is the correlation coefficient between X and y? Note: 1- Do not round intermediate numbers. 2- Round your final answer to 2 decimal places. Your Answer: -0.31

Q: What is the value of my regression's intercept?

A: It is given that Correlation coefficient r = 0.4 Mean(y) = 32, SD(y) = 10 Mean(x) = 20, SD(x) = 12

Q: n looking at your data, you notice that there are at least 3 outliers.What effect do outliers have…

A: In correlation analysis, an outlier is a data point that does not fit the general trend of our data.…

Q: If the Pearson correlation (r=0.9) this means that: Select one: a. 81% of the dependent variable…

A: The coefficient of determination signifies the total variation in Y(the response variable) accounted…

Q: Based on the properties of the covariance and the correlation, which of the following is correct?…

A: Given: Relationship between varience, covariance and correlation coefficient?

Q: Q2: The following data represent the absences (x) for 7 students in a math course and the final exam…

A: Note: Hey, since there are multiple subparts posted,  as per guidelines we will answer first three…

Q: Refer to Exhibit 14-2. The sample correlation coefficient equals _____.   a. .9941     b. –.99705…

A: Given that    X Y X \cdot YX⋅Y X^2X2 Y^2Y2   15 5 75 225 25   12 7 84 144 49   10 9 90 100…

Q: Five observations taken for two variables follow.   x 4 7 10 6 15 y 50 50 30 50 20 c. Compute the…

A:

Q: A box contains 3 red balls and 2 white balls. Two balls are picked randomly from the box without…

A: Given: A box contains 5 balls (3 Red balls and 2 white balls) 2 balls are picked from this box…

Q: 40. Two regression lines of a sample are X+6Y=6 and 3X+2Y 0. Find the correlation coefficient.

A:

Q: If y is the dependent variable and X is the independent variable. And if the sum of the cross…

A: Given,σx=3.15  ,  σy=2.68∑(x-x¯)(y-y¯)=-51sample size(n)=16

Q: Data from 10 Western European countries: summary statistics show that the mean percent of teens…

A: Given information: Marijuana use as the explanatory variable(x), other drugs use as the response…

Q: The population data has a correlation of .60. What is the probability that you will get a sample…

A: Introduction: Suppose r is the sample correlation coefficient between two variables, based on a…

Q: It is possible to calculate a correlation coefficient if you have which of the following? a. two…

A: Correlation coefficient is a measure which indicates the strength or association between two…

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Q: Suppose that the random variable X measures the number of hot dogs purchased in a food court in an…

A: CorX,Y=0.75VX=VY=36W=2X+3Y

Q: Q-1. You are given the following data for variables x and y:                            X…

A: Correlation It tells how the variables are linearly related with each other. It represents the…

Q: If y is the dependent variable and X is the independent variable. And if the sum of (==) (y-)--132,…

A:

Q: A random variable X is normally distributed with a mean of 121 and a variance of 121, and a random…

A: The mean of the random variable W=7X+6Y is, μW=E7X+6Y=7μX+6μY=7×121+6×170=847+1020=1867 Thus, the…

Q: Arandom variable X is normally distributed with a mean of 121 and a variance of 121, and a random…

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Q: W = 6X + 3Y (Do not round.) (Do not round.)

A: X and Y are normally distributed random variables μx=81var(X)=81 μy=200var(Y)=400r=0.5

Q: LO6 2. A set of n = 5 pairs of X and Y scores produces a Pearson correlation of r = 0.10. The X…

A: r(X,Y)=0.10

Q: Suppose we have two samples based upon a large N, and in which there is no corrèlation between the…

A:

Q: If Y is the dependent variable and x is the independent variable. And if the sum of the cross…

A: Giveny is the dependent variable and x is the independent variable∑(x-x)(y-y)=-132variance of the…

Q: give a larger coefficient of​ determination? We say that the linear relationship that has the larger…

A:

Q: What is the Pearson's r correlation coefficient between two variables X and Y if their covariance is…

A: Given that,the covariance between X and Y is the standard deviation of X is the standard deviation…

Q: If the coefficient of correlation between two variables is -0.88, then the percentage of variation…

A: We have given that,  Correlation coefficient (r) = -0.88 Then,  We will find the percentage of…

Q: Q19. The diagram below shows a scatter diagram of values of the variables x and y. Which one of the…

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Q: Imagine that a professor tried to predict students' final exam scores (Y-hat) from their midterm…

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Q: For each sample, do a test for zero correlation.   a.    r = +.45, n = 20, α = .05, two-tailed test…

A: For each given sample, we perform a test for zero correlation. a.  r=0.45, n=20, α=0.05, two-tailed…

Q: Which of the following numbers could not be values of a correlation coefficient? (Select all that…

A: The objective of the question is to identify which of the given numbers could not be values of a…

Q: Assuming a linear relationship between X and Y, if the coefficient of correlation (r) equal -0.30,…

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Q: *18 Calculate Coefficient of Correlation between x and y. 4 6. y: 9. 13

A:

Q: 4. Which of the plots below show a zero correlation between random variables x and y? C. c А. а B. b…

A: Given :  There is four graph shown in question. We need to find 4.which of the following plot below…

Q: Which of the following values could not represent a correlation coefficient? r= 0.98 r = 1.09 r =…

A: The value of correlation coefficient lies between -1 and +1.

Q: x 2 268 2 y 2 165 1

A: The table of x & y is given.

Q: Closing price of two stocks are recorded for 50 days. The sample standard deviation of stock X is…

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Q: If SST = 864, SSE = 494, SSxy = -20, and SSxx = 1.08 what is the value of the coefficient of…

A: Given, SST = 864 SSE = 494 SSxy = -20 SSxx = 1.08         To find, Coeficient of correlation r = ?

Q: An r value of .8 indicates a strong positive correlation.  True  False

A: Given: To determine whether the given statement is true or false.